Universal angle-plate.



F. E. SEDDON. UNIVERSAL ANGLE PLATE. APPLIQATION FILED we. 11, 1911.

Patented May 21, 1912.

COLUMBIA PLANOGRAIII CU.,\VASHINOTON. n. c.

UNITED STATES PA TENT OFFICE.

FREDERICK E. SEDDON, 0F HOTBOKEN, NEW JERSEY, ASSIGNOR TO G-ARVINMACHINE COMPANY, A CORPORATION OF NEW YORK.

UNIVERSAL ANGLE-PLATE.

To all whom it may concern:

Be it known that I, FREDERICK E. Snnnon, a citizen of the United States,and resident of Hoboken, in the county of Hudson and State of NewJersey, have invented certain new and useful Improvements in UniversalAngle-Plates, of which the following is a specification.

This invention relates to an improved jig or fixture for millingmachines, grinding machines and the like, employed for reboringautomoblie cylinders, pump and steam engine cylinders, sleeves, collarsand conplings of various sorts.

A large class of articles in mechanics, particularly automobilecylinders, are made with a bored portion, and a flange facedperpendicular to the bore and having bolt holes by which it is securedto another machine part. This general plan of structure is a common oneon account of the ease with which it is bored and faced in one operationin a lathe, and with absolute precision. On account 01 this ease andprecision of manipulation, bored parts having a perpendicular facedflange at one end with bolt holes, are common in all sorts of machinery.Now if it becomes necessary, by reason of wear, to rebore anv suchautomobile cylinder or machine part, it is evident that the flange isavailable as a guiding plane from which the bore may be carried in aperpendicular direction. The difliculty however is to get an adequateand adjustable holding means which will fix the plane of this flange ina sufiieiently accurate and positive manner in an ordinary milling orgrindin machine, and be adapted for different kinds and sizes ofmechanical bored and flanged parts on which repair may be required.

It is the purpose of my invention to provide a jig or fixture formilling and grinding machines which Will take work of any shape andsize, within of course a reasonable limit of magnitude, and hold suchwork with absolute precision; in other words, with the plane'of theflanged portion perpendicular to the axis of the milling tool, and withas great firmness and rigidity as is requisite to prevent any yielding.

It is further an object of the invention to provide a device of greatsimplicity and eheapness and durability, and which may be used withconvenience and rapidity on any standard milling or grinding machine.

Specification of Letters Patent.

Application filed August 11, 1911.

Patented May 21, 1912.

Serial No. 643,496.

With these objects in view, the invention consists in the improved jigor fixture as hereinafter more particularly set forth.

In the drawings,-I*igurc 1, is a plan View of a knee or universal angleplate embodying the principles of the invention; Fig. 2, is a frontelevation; Fig. 3, is a similar view showing its use with a differentpiece of work.

The best constructions embodying the invention will include a knee,preferably in tegral or in one piece, and having a flat base adapted tofit on the table of the milling machine. From the flat base there willproject upward two uprights to a vertical distance about as great as thelength of the base, with a considerable separation or clear spacebetween them as hereinafter described. These uprights are braced byintegral webs connected to the base in such a manner as to beexceedingly rigid, particularly in use. In accordance with thisconstruction the rigidity of the uprights may be made substantially asgreat at all points, as at points directly adjacent to the base. It willbe appreciated that this rigidity is secured by the constructionhereinafter described throughout as great a height as that justmentioned, and it will be further appreciated that no greater heightthan this in the uprights will be necessary on account of the principlesof operation hereinafter stated. The drawings illustrate a knee having abase 1 and up rights 2, with integral webs3 extending from the rear ofthe uprights toward the base. I11 the best construction the webs willflare outward from one another behind the uprights and proceeding towardthe base. The result of this construction is that the web of one uprightacts as a positive brace for the web of the other upright when the kneeis in use. In other words, each web and upright braces the other in theonly direction where there is any possible weakness. The base 1 hasopenings 4 and 5 in the interest of lightness, and it is evident thatthe Webs 3 may be correspondingly provided with openings if desired.

6 denotes holes in the base through which T bolts may be passed tosecure the base to the milling machine table.

Each of the uprights 2 is accurately faced at 7 in a plane perpendicularto the bottom face of the base 1, and each upright further has means,such as a vertical T slot 8, cut

' ished face 11 on one side.

centrally on its finished or front face 7 so as to receive a clampingdevice at various positions vertically on the upright. will also beprovided four or more brackets 9 which have a slot or adjustment 1Oextending longitudinally thereof, and a flat fin- These brackets willfurther have holes 12 near one extremity, these holes being alsoperpendicular to the fiat face 11 of the bracket.

13 denotes T bolts adapted to be received in the T slots 8 of theuprights 2 and passing through the slots 10 of the brackets 9. Whenthese bolts are tightened the various faces 11 of the brackets will berigidly held in exactly the same plane, and this plane will furthermorebe the plane of the finished faces 7 of the uprights. The holes 12 ofthe brackets will be located anywhere within the open space between theuprights, their position depending merely on where the brackets happento be clamped.

Assuming now that it is desired to rebore a part of a machine, such asan automobile engine cylinder, the cylinder is merely roughly blocked inplace within the knee so that the cylinder base flange is roughly in theplane of the faces 7. The various brackets will now be fastened to theusual holes of the cylinder base flange by any convenient bolts.Thereupon the T bolts 13, which have been previously positioned in thebrackets and in the T slots 8, will be firmly tightened, and by this actthe finished faces of the various brackets and also the bottom face ofthe cylinder base flange will be brought with great accuracy into theplane of the upright faces 7. This accuracy is secured notwithstandingthe considerable weight in the auto-mobile cylinder, and the rigidity isso great that any suitable steadying devices, such as screws 14, may bethereupon tightened without disturbing the accuracy of the firstadjustment. In like manner the cylinder may be blocked up from below byany sultable wedge or screw. The larger the cylinder the shorter will bethe projection of the brackets 9 beyond the uprights 2 and the greaterthe rigidity of their action, so that with cylinders of considerablesize and weight, where the distorting strains are proportionately large,the rigidity will be proportionately intensified and rendered greaterthan the requirement for any occasion which may arise. It is furtherapparent that with cylinders cast en bloc, with three or four or sixcylin ders in a unit casting, the same knee may be used and the brackets9 merely employed with those holes of the cylinder base flange which arewithintheir range of adjustment. This may allow a number of thecylinders to extend entirely above the knee, but these cyl- Gopies ofthis patent maybe obtained for five cents each, by addressing theCommissioner of Patents,

There rights, said brackets having perforations at their extremities, asand for the purposes set forth. I

2. A knee for holding flanged engine cylinders with their bores parallelto a given axis, comprising a frame formed with an opening, T slotsextending among a plurality of sides of said opening, brackets havinglongitudinal slots and holes, bolts in said T and bracket slots, saidbrackets and frame being adapted to be clamped into en- 1 gagement invarious positions of adjustment by means of said bolts, and additionalbolts passed through the holes of said brackets to clamp the workthereto.

3. A knee for holding faced castings perpendicular to a given axiscomprising base, uprights, webs extending rearwardly from the uprightstoward the base and flaring outwardly from one another as they extendtoward the base, and brackets, said brackets and uprights havingfinished plane surfaces and adapted to be clamped into engagement invarious positions of adjustment in a plane perpendicular to the base,said brackets being clamped in engagement in every possible positionwithin the plane of said faces and within a certain radius of movement.a

a. A knee for holding flanged engine cy inders with their bores parallelto a given f axis, comprising a broad flat bottomed base having rigidvertical frame bars with finished faces perpendicular to a given axis,and T slots extending along'a middle line of said faces, brackets havinglongitudinal slots and holes at their extremities and having finishedfaces, and T bolts, said brackets and frame bars being adapted to beclamped into engagement by said belts in various po sitions ofadjustment with their finished faces in contact.

Signed at New York, in the county of New York, and State of New Yorkthis 8th day of August, A. D. 1911.

FREDERICK E; SEDDON.

Witnesses:

EDWARD J. MCCLELL N, FRANK A. POWER.

Washington, D. G.

